Display of local activity using dynamical speckle patterns

We present a display to distinguish loci of equal activity in samples showing dynamic speckle patterns. Regions differing in their activity are shown as different gray levels. We define the generalized differences and the weighted generalized difference operations and we compare the results with previously reported methods. Results obtained with seeds are shown.

[1]  Héctor Rabal,et al.  Transient phenomena analysis using dynamic speckle patterns , 1996 .

[2]  Yoshihisa Aizu,et al.  2 – Bio-speckles , 1996 .

[3]  Hitoshi Fujii,et al.  Real-time visualization of retinal microcirculation by laser flowgraphy , 1995 .

[4]  J D Briers,et al.  Laser speckle contrast analysis (LASCA): a nonscanning, full-field technique for monitoring capillary blood flow. , 1996, Journal of biomedical optics.

[5]  H Fujii,et al.  Evaluation of blood flow by laser speckle image sensing. Part 1. , 1987, Applied optics.

[6]  J. D. Briers,et al.  The statistics of fluctuating speckle patterns produced by a mixture of moving and stationary scatterers , 1978 .

[7]  Toshimitsu Asakura,et al.  Bio-speckle phenomena and their application to the evaluation of blood flow , 1991 .

[8]  Catherine Wykes,et al.  Holographic and Speckle Interferometry by Robert Jones , 1989 .

[9]  Toshimitsu Asakura,et al.  III: The Statistics of Dynamic Speckles , 1995 .

[10]  Deyan Xu,et al.  Novel wedge plate beam tester , 1995 .

[11]  P. Zanetta,et al.  Local correlation of laser speckle applied to the study of salt efflorescence on stone surfaces , 1993 .

[12]  K Wolff,et al.  Corrosion monitoring with speckle correlation. , 1999, Applied optics.

[13]  Héctor Rabal,et al.  Statistics of the dynamic speckle produced by a rotating diffuser and its application to the assessment of paint drying , 2000 .

[14]  J. Goodman Statistical Properties of Laser Speckle Patterns , 1963 .

[15]  Charles Joenathan,et al.  Temporal and spatial properties of the time-varying speckles of botanical specimens , 1995 .

[16]  Héctor Rabal,et al.  Speckle time evolution characterization by the co-occurrence matrix analysis , 1999 .

[17]  F. M. Mottier,et al.  Determination of the Granular Radiance Distribution of a Diffuser and its Use for Vibration Analysis , 1971 .

[18]  M. S. Howarth,et al.  Tetrazolium staining viability seed test using color image processing , 1992 .

[19]  G. Tribillon,et al.  Biological Activity Measurement on Botanical Specimen Surfaces Using a Temporal Decorrelation Effect of Laser Speckle , 1989 .

[20]  J. D. Briers Time-varying laser speckle for measuring motion and flow , 2001, Saratov Fall Meeting.